WO2003064747A1

WO2003064747A1 - Braiding machine

Info

Publication number: WO2003064747A1
Application number: PCT/DE2003/000266
Authority: WO
Inventors: Jürgen LACHE
Original assignee: Schnellflechter Berlin Gmbh
Priority date: 2002-01-28
Filing date: 2003-01-27
Publication date: 2003-08-07
Also published as: CN1435521A; CN100447324C; DE10204212A1

Abstract

The invention relates to a braiding machine, especially a rotational braiding machine, used for the production of non-separable braiding, comprising a braiding head with an outer and inner supply bobbin, a carriage track with vertical and horizontal guiding surfaces whereby the supply bobbins are guided along a sinusoidal slide path, also comprising a disk for removing the cordlike product from the braiding head, further comprising a drive mechanism for the braiding head and withdrawal disk, an automatic lubricating device, levers embodied as compact or hollow elements for guiding the cordlike products, whereby the supply coil arrangement is disposed outside the plane of the surface of the slide path, additionally comprising a machine frame on which the individual sub-elements are disposed. The aim of the invention is to improve performance, especially the working speed, and to reduce the machine mass, to improve lubrication, operability and maintenance while at the same time simplifying the drive of said machine and reducing costs significantly. Said objectives are achieved by balancing the tilting moment of the supply bobbins (34,35) by increasing the vertical guide surfaces (a,b) 1.5 2 times in the radial direction of the machine axis (Z) and by moving the bobbin axis (AS) closer in the direction of the plane of the slide path (E) by a value of 0.1-0.2 times the distance (x) of the plane of the slide path (E), and by directly connecting the individual dosing pistons (39) of the lubricant supply mechanism to the stay bolts (40) associated with the individual lubrication points (41), and by embodying the compact or hollow element as a flat element (47) provided with a lift element (51) which is curved in the shape of a banana - from the sliding element - and becomes thinner to form a tip, without any bending transitions. The width of the lever is 3.5 to 6 times greater than the thickness of the lever. Spur pinions (9, 10, 11, 12) are provided to transmit motor torque.

Description

braiding

The invention relates to a braiding machine, in particular a rotary braiding machine for producing self-retaining braids, comprising a braiding head consisting of a group of external supply coils held in supports around a machine axis in one direction and a likewise circularly rotating group of inner delivery coils held in carriers , Which exported to the outer supply spools an opposite rotational movement, and a carriage track with vertical and horizontal Fuhrungsflachen on which the delivery spools are guided along a sinusoidal backdrop, with a pulley for removing the stranded material from the braiding, with a drive for the braiding and the A trigger pulley having an automatic lubrication device, wherein a central stationary lubricant supply mechanism is provided, which comprises a hollow axle and a head part, wherein the head part opens into a sealed annular groove, the at the outer sliding surface on the outer circumference of the head part and a passable mounted on the head part and rotatably mounted distribution star is provided on the circumference of the distributor according to the number of points of lubrication connections that are on the downstream side via metering and stud bolts with the lubrication points, as compact or hollow body formed lever for driving the Strange, the levers are mounted on the lever stand at one end rotatable and swingable, with this and the outer supply bobbins revolve around the machine axis and the other end have a receptacle for a role to Fadenfuhrung, the supply spool assembly outside the plane of Gleitbahnflache, and with a machine frame on which the individual modules are arranged.

Braiding machines are used to produce braids made of metal wires, textile threads or plastic yarns, for example, for the sheathing of cables or hoses and for the production of strands or ropes. The braided lines must be crossed in opposite directions to form the braid. For this purpose, the braiding has on the one hand spool holder, which rotate in a clockwise direction, and on the other hand spool carrier, which rotate in the counterclockwise direction, and a Strangfuhrungsvorrichtung with the counter-rotating strands to be crossed to the desired weave binding are passed to each other. Furthermore, in order to form the braid, a translatory pull-off movement has to be realized by which the braided stranded cross-linked material is transported away from the braiding point in an associated manner and thus the braided structure (braiding angle of the braid or braid) is shaped in a preselectable manner. In general, a lubricating device is also required for the effective supply of lubricant for the stationary and rotating lubrication points in the interest of a long service life of the machine parts.

To realize the mentioned machine functions, the necessary functional assemblies must be arranged on a machine frame so that the braiding processes can be prepared and carried out simply and effectively.

From DE 44 46 559 C1 or EP 0 726 347 A2 discloses a braiding machine, in particular for the manufacture of wire and textile braids, in which a column is fixedly arranged on a frame, which receives a rotationally driven Gleitbahntrager, which is a Rotation axis is rotatable and has at least one lower coil, and in which an inner ring is arranged to rotate about the axis of rotation, which drives at least one upper coil to the lower coil in opposite directions, wherein the Gleitbahntrager and the inner ring are drivingly connected by means of at least one rigidly coupled gear pair. The at least one gear pair is mounted on at least one bracket fixed to the column.

The Gleitbahntrager is driven by a motor and a toothed belt drive. He is schußelformig formed and carries on its periphery the slideway ring. The lower coils are thus driven by toothed belt, toothed belt, Gleitbahntrager and Gleitbahnring. The upper coils are driven by a motion branch behind the aforementioned drive elements, toothed belt, toothed belt and Gleitbahntrager. Thus, the rotational movement of the Gleitbahntrager is forwarded via a firmly connected with him coaxial sprocket in a frame fixedly arranged console rotatably mounted gears.

This console receives at least one pair of gears, preferably four pairs of gears on. The respective upper gear of the gear pairs drives via a further coaxial rotatable ring gear a toothed inner ring firmly connected to it.

The inner ring passes the movement on in the Gleitbahnring rotatably mounted intermediate wheels on tooth segments on and thereby causes an opposite rotation of the same relative to the slideway ring.

Each sector gear is bolted to a slide and a coil carrier which receives an upper coil and carries it in the opposite direction of rotation.

In this known arrangement is problematic that the Gleitbahntrager with its lubricating fluid receiving area is an extremely complicated component and a large Olvorrat must rotate during operation of the braiding machine, resulting in disadvantages in the machine dynamics and performance. In addition, the seal against oil loss and a change of the seals is associated with wear with greater effort.

In addition, the known machine configuration with four wheel pairs for driving the inner ring to the upper coil brings the arrangement of many drive elements and a significant weight load for the braiding with it.

Another significant disadvantage of these known braiding is further that by the insufficient balance on the Gleitfuhrung the upper coil between the overturning moments due to the weight load on the one hand and the centrifugal force load on the other hand, and the mass moment of inertia of the oscillating lever arms swing the working speed remains significantly limited.

Furthermore, the insufficient balance in these overturning moments is also the cause of the increased wear of the slideway partners and an increased operating temperature of the Gleitbahnpaarung.

DE 196 14 605 AI attempts to counteract this wear and the occurring temperature peaks by increasing the carrying capacity of the slide track partners using conventional low lubricant quantities, the sliding track pairing in the direction of the relative movement between the sliding track pairing under the occurring tilting moments and taking into account the lubrication gap guided flat along at least one pair of viable Ringsegmentflachen. Although this known solution makes it possible, using complex complicated cross-sectional shapes of the sliding guide, to achieve a certain degree of comparison of the carrying capacity and the surface pressure, it can not bring about a satisfactory balancing of the tilting moments.

Lubricating devices are known from DE 41 11 553 AI, DE 195 26 744 A2, which has a central stationary lubricant supply mechanism with pump and storage container. A supply pipe is separated from the central lubricant supply mechanism by a fixed hollow shaft guided in a front side of the hollow axle, cylindrical head with Durchfuhrungsbohrung and mouths into an annular groove which is located on the sliding surface on the outer periphery of the head part and a passable on the headboard and rotatably mounted distribution star and at the beginning of the distribution star according to the number the lubrication points fittings are arranged with feed-through holes, which are in communication with the annular groove. On the connecting pieces metering pistons are attached, which in turn pass into pipelines and these are mounted in provided with Olfuhrungsbohrungen stud bolts, the studs are inserted into a rotatable Tragkorper inside and the Olfuhrungskanale the studs are mounted flow-compatible with the Schnierstellen. The distributor star is forcibly guided by means of connecting elements fastened to the stud bolts and to the distributor star. In the oil supply of the rotating lubrication points according to this known solution, problems arise in that the metering devices are arranged immediately behind the Drehdurchfuhrung for the oil passage from the stationary to the rotating area and thus are located at some distance from the lubrication points. Since the pipelines between the metering devices and the lubrication points are so-called "open" lines, as a result of the effect of centrifugal force on the lubricant and the suction effect when the open lubrication points are passed through the sliding carriages, air enters the pipelines in the form of air bubbles. This leads to irregularities or failure of the lubricant supply to the affected areas, which causes unacceptable temperature increases or increased wear. To a significant reduction in the mass of Strangfuhrungshebeln used in braiding machines has contributed to the solution according to DE 100 14 433 AI, in which the Strangfuhrungshebel is rotatably mounted at one end on the lever stand and schwinkbar arranged in a longitudinally extending Hebelkorper bearing eye, with this and the outer Supply spools revolves around the machine axis and the other end has a receptacle for a role to Fadenfuhrung, wherein in the Hebelkorper a Fuhrungsstift is provided with fitted Gleitstein. The Strangfuhrungshebel is designed as a closed hollow body or as a Kompaktkorper, which are formed from a multi-layer shell or shell. It has been shown that the shell-shaped lever, in particular at very high operating speeds in the oscillating direction, is subjected to a considerably higher load than in the direction of the machine axis z. Thus, due to the inertia of the lever, control forces for the function-dependent deflection of the Strangfuhrungshebels, which are a multiple of the tensile forces in the braided strand in the leadership on the rollers on the lever to the central braiding F. Thus, it has become clear that the shell-shaped lever has to absorb high bending and torsional forces in the region of the fit of the sliding block, and that the front part of the lever holding the thread guide roller does not have sufficient torsional rigidity. As a result, the very high operating speeds, for example, with a vibration frequency of about 12 Hz, despite noticeable reduction of the mass moments of inertia in this known Strangfuhrungshebel not always manageable.

The basic structure of the braiding machines described above consists essentially of one of steel profiles formed table, a machine housing made of cast iron, a complicated constructed arm made of cast iron or steel profile and a trigger device with a toothed pulley and a multi-branched pulley drive.

All these braiding machines have the common disadvantage that the design of the machine housing and the extraction device is technically complex and results in a large machine mass, in particular the functional area around the supply spools around difficult to access and thus complicates the operation and maintenance and the trigger pulley drive with its preferably exposed drive elements is prone to failure and requires a lot of maintenance.

In this prior art, the invention has the object to improve a braiding machine of the type mentioned in such a way that the performance, in particular their operating speed, while reducing the machine mass, improving lubrication, ease of use and maintenance to simplify the drive and at Cost reduction is significantly increased.

This object is achieved by a machine of the type mentioned with the characterizing features of claim 1.

Advantageous embodiments of the machine are the dependent claims.

The machine according to the invention is characterized by the fact that, in spite of lightweight construction, it becomes possible for the first time in comparison with the machines of the prior art, the working speed, that is to say the Rotational speed of rotating parts to increase up to 20% over the current international peak. The secure mastery of the associated with the increase in the rotational speed increase in centrifugal forces is achieved on the one hand by the flachmaßige enlargement of the sliding surface up to twice the original sliding surface and by an aligned arrangement of the upper supply spools in the vicinity of the center of the radial Fuhrungsflache of the slide ring, whereby the Flat pressing are evenly distributed and the tilting moment balance is significantly improved.

On the other hand, the increase in the operating speed is achieved by the design of the Strangfuhrungshebels as a stressed Flachkorper with increased bending resistance in the oscillating direction and by bananenformige curved and additionally streamlined form of Strangfuhrungshebel, which allows a further reduction in mass moment of inertia.

The erfmdungsgemaße machine is also characterized by the fact that the installation of metering devices in the immediate vicinity of the lubrication points ingress of air in the open lines m is reliably prevented, so that a gleichmaßige lubrication is achieved without interference.

The machine according to the invention further realizes a simple robust, at the same time low-wear drive concept with spur gear pairings, which manages without branching with substantially fewer gear elements, in particular bevel gear pairings. This has the advantage that the assembly costs significantly reduced, the wear significantly lowered, the life of the drive increases despite higher operating speeds and maintenance is simplified. The direct drive of the pulley also allows To reduce the play in the drive process, to better dose the deduction forces and thus to improve the braiding quality targeted. The inventive machine is compact and simple in construction, the functional units are clearly arranged and freely accessible for assembly and maintenance purposes.

The invention will be explained in more detail below on an exemplary embodiment.

It shows or shows:

Fig. 1 is a front view of a braiding machine according to the invention with a section of the

Machinery inside,

FIG. 2 shows a cross section through the braiding head of the braiding machine according to FIG. 1, FIG.

3 is a detail view of the sliding surface of the slideway ring with representation of the inventive tilting moment balance,

Fig. 4 is a detail section through the

Rotary feedthrough and the lubrication point connection of the lubricant supply system,

5 shows a lever stand with an inventive Strangfuhrungshebel,

Fig. 6 is a Strangfuhrungshebel in the plan view of the mounting position shown in FIG. 5 and 7 a Strangfuhrungshebel in the

Front view seen from the machine center.

Fig. 1 shows the overall structure of the braiding machine 1 according to the invention with its main functional assemblies and functional elements. The braiding machine 1 according to the invention is based on a machine frame 13 with a table 2 and a table top 3. On the table top 3, a round base plate 4 is screwed, which receives the entire braiding 5 centrally and additionally via three sockets 30 a cam ring 31 carries on his Inside a sinusoidal gate track, not shown, for guiding the Strangfuhrungshebel 29 has moved with the known manner wires or thread of supply spools. Adjacent to the base plate 4 and braiding 5 is further screwed onto the table top 3, a support arm 25 which receives the entire trigger 26.

The Kernstuck the braiding 5 is a stationary Fuhrungssaule 14 which is mounted centrally on the base plate 4 and carries all components of the braiding 5 to the lower supply spools 32 on spool supports 33 and the upper supply spools 34 on spool supports 35 and the distributor star 27 for the lubricant distribution ,

The drive 6 for the braiding 5 is shown in FIGS. 1 and 2. From a speed variable motor 7, a countershaft 15 is driven by toothed belts 8 with two gear wheels 9 and 10, wherein in a known manner, the gear wheels 9 and 10 are rotatably connected to the toothed belt on the countershaft. The gears 9 and 10 drive the rotatably mounted gears 11 and 12, wherein the quotient of the Gear ratios, for example, equal to 3. The gear 11 is connected via the intermediate flange 18 with the Gleitbahntrager (Mittelkorper) 19 and the slideway ring (Schlittenbahnring) 20, from the periphery of the lower supply spools 32 are supported by reel 33 and thus rotate in a first direction of rotation. The gear 12 is connected via the bushing 16 and the inner ring 17 with the ring gear 21 and moves it in the same direction as the Gleitbahnring 20, but at three times the speed.

About the rotatably mounted in Gleitbahnring 20 Zwischenrader 22 takes place a reversal of rotation for the toothed segments 23 and fixedly connected to them slide 24, whereby the 24 suspended on the carriage 24 by means of coil carrier upper supply spools 34 ultimately counter-clockwise to the lower supply spools 32 rotate at the same speed. The drive for the braiding 5 is thus realized by four spur wheels, the storage is close to the frame and thus is stable.

The oil reservoir for the drive elements is stationary and is located directly on the frame, so that there are advantageous conditions in terms of machine dynamics, secured lubrication and easy maintenance.

The trigger 26 is arranged on an angle-shaped support arm 25. On the upper transverse leg of the support arm 25 a drehzahlveranderlicher gear motor 36 is placed on the drive shaft journal, the trigger plate 37 is rotationally fitted.

With this direct drive and the space-saving arrangement of the support arm, there are no exposed drive elements and no difficulties in operation and maintenance. The entire braiding machine 1 according to the invention is provided with a Protective cover sound-insulating and dust-tight encapsulated, with the protective cover is placed on the table top.

Fig. 3 shows a detailed view of the sliding surface of the slideway ring with representation of the inventive tilting moment balance.

At the orbital movement of the upper feed bobbins 34 of the bobbin 35, the toothed segment 23 and the carriage 24 are involved, wherein the toothed segment 23 and carriage 24 with the slideway ring 20 form a sliding pair. The pairing is guided by means of the guide surfaces a, b, c, d and d and lubricated by the lubricant supply system shown in FIG. 4 on the four surfaces with 01. Since the supply spool lies outside of the sliding pair and makes up the majority of the circulating mass, its positioning in the formation of tilting moments plays the decisive role. The machine according to the invention is a high speed rotary braiding machine in which the centrifugal acceleration α (α = ω ² xr, with angular velocity ω and orbital radius r) is in the range of five to ten times the gravitational acceleration g.

As can be seen from Fig. 3, the coil axis AS lies outside the center of the radial Fuhrungsflache (Gleitbahnebene E) and results in m-g-x a right-handed tilting moment and m-α-y a left-turning tilting moment. For a good Kippmomentbalance thus the coil axis AS is arranged at about 0.15x below the slide plane E.

Fig. 4 shows a part of the lubricant supply mechanism with distributor star 27, pipe 38, metering piston 39, stud 40 and lubrication point 41 on the slide ring 20. From a stationary arranged Olversorgungsbehalter with motor-driven pump is 01 under pressure at selectable intervals to Olkanal 45 in the stationary head part 44 of the rotary feedthrough required.

From the oil passage 45, the 01 is printed in the annular groove 42 of the rotary distributor star 27, which is encapsulated on both sides by pressure-resistant seals 43. The 01 passes under pressure through the pipe 38 to the metering piston 39. The pressurized metering piston 39 is at each lubrication cycle a defined amount 01 via the lubrication channel in the stud 40 and the Gleitbahnring 20 to the lubrication point 41. Since the metering piston 39 according to the invention arranged immediately in front of the lubrication point 41 is, the formation of trapped air is avoided and run the desired lubrication unaffected.

5 to 7, a lever stand 28 is shown with the functional elements for the Strangfuhrung. At the lever leveler 28, the banana-shaped shaped Strangfuhrungshebel 29 according to the invention for guiding the wire or Fadenstrange for purposeful cruising is suspended rotatable and schwinkbar. The movement is transmitted from the cam ring 31 via the sliding block 46, which is controlled in the sinusoidal scenery curve of the cam ring, on the Strangfuhrungshebel.

The Strangfuhrungshebel 29 has a slightly curved shape without Knickubergange and consists of a Flachkorper 47. The Flachkorper 47 consists of a plastic fiber laminate shell and has a bearing eye 48 for hanging, an intermediate roller 49 and at the top of a roller 50 for leadership.

The lever member 51 is formed slimmed in the area between the sliding block 46 and the tip and runs bent banana-shaped to increase the torsional stiffness and at the same time to avoid collisions with the upper supply spools 34.

The inventive Strangfuhrungshebel 29 has an extremely low mass moment of inertia and increased bending resistance by increasing the lever width in the swing direction while reducing the lever thickness to Flachkorper and slimming to the lever tip in the interest of a further reduced mass moment of inertia. The ratio of lever width to lever thickness is about times.

List of used reference numbers

Braiding machine 1 table 2

Table top 3

Base plate 4

Braiding head 5

Drive 6 Motor 7

Timing belt 8

Spur gear 9

Spur gear 10,11,12

Machine frame 13 Guide pillar 14

Transfer 15

Bushing 16

Inner ring 17

Intermediate flange 18 Slideway carrier (middle body) 19

Slide track ring (carriage track ring) 20

Sprocket 21

Intermediate wheel (inner wheel) 22

Toothed segment 23 carriages 24

Support arm 25

Deduction 26

Distributor star 27

Lever stand 28 Strangfuhrungshebel 29

Supports 30

Cam ring 31

Lower supply spools 32

Coil carrier of 32 33 Upper supply spools 34

Coil carrier of 34 35 geared motor 36

Pulley 37

Pipeline 38

Metering piston 39

Stud bolts 40 lubrication points 41

Annular groove 42

Sealing 43

Headboard 44

Olkanal 45 sliding block 46

Flat body 47

Bearing eye 48

Intermediate roller 49

Roller 50 lever part 51

Coil axis AS

Braiding point F

Machine axis Z

Gleitbahnebene E guide surfaces a, b, c, d

Coil mass m

Gravitational acceleration g

Angular acceleration ω

Distance x, y

For this 7 sheets drawings

Claims

PATENTA SPEECHES

A braiding machine, in particular a rotary braiding machine for producing self-retaining braids, comprising a braiding head comprising a group of outer delivery coils held in carriers around a machine axis in one direction and a likewise circularly rotating group of inner delivery coils held in carriers to the outer supply spools perform an opposite rotational movement, and a carriage track with vertical and horizontal Fuhrungsflachen on which the supply spools are guided along a sinusoidal backdrop, with a pulley for removing the strand-like material from the braiding, with a drive for the braiding and the pulley, with an automatic lubrication device, wherein a central stationary lubricant supply mechanism is present, which comprises a hollow axle and a head part, wherein the head part in a sealed annular groove, which extends to the outer Gleitfl ache on the outer circumference of the head part and a passable mounted on the head part and rotatably mounted distribution star and the circumference of the distributor according to the number of points of lubrication connections are provided, which are on the supply side via metering and stud bolts with the lubrication points in connection, as a compact or Hollow trained lever for driving the Strange, the levers are mounted on the lever stand at one end rotatable and swingable, with this and the outer supply spools revolve around the machine axis and the other end have a receptacle for a role to Fadenfuhrung, wherein the supply spool assembly outside the plane of the Gleitbahnflache, and with a machine frame, on which the individual modules are arranged, characterized in that the Kippmonentenbalance the circulating supply spools (34, -35), the vertical Fuhrungsflachen (a; b) to 1.5 to 2 times in radial Direction of the machine axis (Z) enlarged and the coil axis (AS) in the direction of the slide plane (E) to the 0.1 to 0.2 times the distance (x) of the Gleitbahnebene (E) is arranged approximately, and that the individual metering piston (39 ) are connected directly to the individual lubrication points (41) associated stud bolts (40), each metering piston by a pipe (38) with the distributor star (27) is directly in communication, and that the compact or hollow body as a Flachkorper ( 47) is formed with a banana-shaped curved from the sliding block (46), in addition to the tip slimmed-lever part (51) without Knickubergange, the Verhältni s from lever width to lever thickness amounts to at least 3.5 to 6 times, and that for transmitting the torque of the motor branchless spur gears (9, 10, 11, 12) are provided.

2. Braiding machine according to claim 1, characterized in that for the drive (6) of the

Braiding head (5) a variable speed motor (7), a toothed belt (8) and preferably four spur gears are provided.

3. braiding machine according to claim 1, characterized in that the braiding head (5) and the pulley (37) each having a separate motor (7; 36) is assigned, wherein the motor for the pulley (37) is a direct drive.

4. Braiding machine according to claim 1 to 3, d a d u r c h e c e n e c e s in that the motors are frequency-controlled.

5. Braiding machine according to claim 1, characterized in that the annular groove (42) has a the

Distributor (27) associated with both sides sealing (43) relative to the head part (44).

6. Braiding machine according to claim 1, characterized in that the flat body (47) is a shell body which consists of a fiber, preferably carbon, glass, metal or whisker fibers, reinforced plastic laminate.

7. Braiding machine according to claim 1 and 6, characterized in that the fibers are present as tissue.

8. Braiding machine according to claim 1, 6 and 7, characterized in that the shell body comprises at least two layers of a reinforced with fibers, preferably carbon, glass, metal or whisker fibers laminate, and a stabilizing layer of foam, preferably polyurethane foam ,

9. braiding machine according to claim 1, 5 and 6, characterized in that the flat body (47) is a hollow body in which a core of a foam, preferably polyurethane foam is arranged.

10. braiding machine according to claim 1, 6 to 9, d a d u r c h e c e s in that the shell body extends from the bearing eye (48) until receiving the roller (50) asymmetrically to its longitudinal axis in the longitudinal direction.

11. Braiding machine according to claim 1, 6 to 10, wherein a resin used for impregnating the carbon fiber fabrics is an epoxy resin, polyimide resin, phenol resin or polyester resin.

12. braiding machine according to claim 1, 6 to 9, d a d u r c h e c e n e c e s in that e e ts that are inserted for attachment to the lever stand, the guide rollers, the Gleitsteinhalterung between the fabric layers.

13. Braiding machine according to claim 1, 6 to 9 and 12, d a d e r c h e c e n e c e in that the inserts are made of metal, preferably aluminum, aluminum alloys or plastic.

14. Braiding machine according to claim 1, characterized in that the machine frame (13) consists of a table (2) with table top (3) on which the braiding head (5) with its base plate (4), a support arm (25) for the trigger (26) with free access to the braiding head (5) and the coil supports (33; 35) is mounted centrally, wherein on the table top (3) a protective cover is kept soundproof and dustproof removable mounted.

15. Braiding machine according to claim 14, characterized in that the protective hood is provided on its inside with a sound absorption layer.

16. Braiding machine according to claim 1, characterized in that the supply spools is associated with an empty spool recognition system which comprises a sensor for the inner and outer supply spools, a trigger sensor designed as a proximity initiator and a processing device for the signals obtained from the sensors.

17. Braiding machine according to claim 1 and 16, characterized in that the sensors are respectively adjusted to the center of the supply spools.

18. Braiding machine according to claim 1, 16 and 17, in that a sensor is an infrared sensor.